Detent device for locking bolts



W. Bl BOLLES.

' DETENT DEVICE FOR LOCKING BOLTS.

../PPLlcAloN FILED Aus.2a, 1921.

Lm. mmm ont. 10,1922;

"wllllllllllllllllll Patented @et liti, 122.

i e "WILLMIWI IB. BULLES, 015' MILVTAUIKEE, WISCUNSIN.

nnrniwr nnvicr. ron Locmaria noms.`

" Application inea august ze, i921; serial irq. 494,483.

To aZZwzo/m, t may concern y e Be it known that I, WiLLiAM B BoLLns, a citizen of the `United States, residing at Milwaukee, in the county of Milwaukee and State of` Wisconsin, have invented a certain new and useful improvement in Detent Devices for Locking Bolts, of which the following is a full, clear,` and enact description.

The present invention relatesto afdetent device which is particularly adapted intended for use in retaining in inoperative position the locking bolt for a door, whenv the f door `has once'been opened, thereby insuring that the door will not be retaineddiin its movement to open position by engagement between the lockinoQ bolt and any part ofthe door frame or floor adj ae'ent'the dopr.y

"The device is `partieularly4applicable to fdoors whichy are equippedfwithmlock orbolt 20 operating mechanism which is operableby a bar or similar device which `is engaged byr the hand or body of a person, such structures `being largely used in theatres and public buildings `generally inorder to permit the easy opening ofthe doors in case ef `necessity, aS for lnstancein the event of fire.`

Reference should `be had to theiaccom-v panying drawings forminga part of this i ao specificationlin which Fig. 1 isan elevation showinga door and doorframe having the present invention applied thereto; Fig. 2is

` a sectional elevation "showing a portion 0f a e door frame showing the invention applied door and a door frame with the invention applied thereto in one position of operation; Fig. 3 is a sectional elevation ofl adoor and thereto in a diiferent position of operation than that shown in Fig. 2;Fig; 4-i`s a perspective view showing one portion of the device; Fig. 5 is a perspective View showing a cooperating portion'of the device. j

`Referrmg to the drawing, 1 indicates a door'jamb and 2 a door.,1 As shown in the present instance, the door is applied with the bolt rod 3 extending to the upper part ofthe door anda bolt rod 4 extending `to-` ward the lower part of the door:

The bolt rod 41is` adapted to occupy an `opening in a plate such as indicated at 5,

which plate is fastened in the floor and the bolt rod 3 is adapted to engage in an opening j in the upper part of the door frame. tllhese `bolt rods 3 and 4 extend into a casing 6 in which is contained suitable mechanismnot shown and described, which in turn is oper `ated by the movement ofthe bar 7, which tion.

` 20 for the reception of screws.

movement will cause the" bolt `rods 3 and 4 to be retracted and so release the door and permit its movement.

Devicesofithe character which haveijust been described are not new in this art and the presentinvention is not directed toward this combination broadly, butrather isdi- I rected` toward 'the detent mechanism Vat the top ofthe door which operates to hold a bolt 65 tion 8 at the rear end of which are twoo'ppo# 3 sitely disposed posts 9 and 10 which extend below the body portion. Within the body portion is a detent` member 11. This detent member is provided withan enlarged head portion 12 which has an easy i'it within the V walls of an opening in the body portion and serves to guide the detent member 11 in its 80 movement and prevent any other movement of the detent member than in alinear direc rlhe portion 12 is hollow as indicated in Fig. 2 andis adapted to cooperate with one 85 end of aspring 13 and the opposite end of the spring bears upon a head member 14 which carries a post 15 around which the spring 13 coils.` rThis post prevents any buckling of the spring 13 and insures a sub- 90 stantially-linear movement of the detent `11 when the same moves under' the action of the spring 13. rllhe head 14 is threaded upon its periphery and engages in a threaded opening in an end of the body portion of the detent member. i l

At the forward part of the body portion` there is a downward extending lug 16, and' formed integrally with this lug and extending on both sides of the body portion is a plate 1'? and this plate at its central portion has an extension 1S which has an opening 19 extending therethrough. The plate 17* at its opposite ends is provided with holes The device which has been described and shown in Fig. 4 is adaptedto be secured at the upper end of la door such as the door 2 by mortising the saineinto the top of the door into the proper position to cooperate 110 with the bolty rod e 3." When the 1 device is so mortised into the top of the door the pro-v lis included between the downward extension 16 and the post 9.V The plate 20 is then secured by two screws and when so secured the, detent device is absolutely retained against anytipping action with respect to the door in which it is secured.y

The provision against, tipping action is quite essential in a device of this kind, inasmuch as if; there be tipping action it will bind the .bolt rod, and so prevent proper functioning of they bolt rod and may perchance` lock the rod against movement and so prevent openingy of the door, and also prevent closingthe door;

As will be seen from 2, the bolt* rod 3 passesthroughthe opening 19 in the extension 18.

p Itis necessary to use, in connection with the detent device, a striker plate, and such a form. of. striker plate is indicated in Fig. 5. Itconsists of a base portion 22 which has an extension 23 lying inthe same plane t as the part 22 and :trom the extension 23 there is ay right angled extension or plate 24. The base 22 is provided with screw holes 22L by which the plate may be secured to the door traine and-is secured in ay position such that the plate 24 extends downwardly rand in position to be engagedby the detent member 11 which has been heretofore de- This particular form of striker plate is not essential and variations in its structure may be made.

hrough the base 22 there is an opening i 22", the samebeing elearlyshown in Figs.

2 and 3 and indicated in dotted lines in Fig. 5;. Behind thisV plate and in the frame of f the door there is a recess such as indicated at 1a, which receives the end of the bolt rod 3 so that the same'inay pass entirely through the opening 22h when the bolt rod is in its uppermost position.

When the rod 7 is operated and the bolt f rod 3 is draw-n downwardly, the detent member 11 is shot outwardly by the spring 13 and lies in position above the bolt rod 3 so that if the bolt rod is subsequently released, it cannot moveupwardly because hindered by the detent 11.

In devices of this kind the bolt rods suoli as the bolt rods` 3, and 4 are operated together by the mechanism which moves them,

l asffor instance, the mechanism contained in thelcasing 6, so that when the bolt rod 3 is v y'held down by the detent 11, the bolt rod 4 is maintained in its uppermost position, and there'toreboth bolt rods are held out of engaging position with the floor or with the door frame.

When the door is moved to closed position the detent member 11 engages with the plate 24 which pushes it inwardly and as soontas the plate 24 moves beyond the bolt rod 3, the same may shoot upwardly behind the plate.

It will be noted that the body portion of the detent member and the extensions 9 and 10 as well as the retaining bar or plate 17 are formed as an integral structure which while not essential is desirable, inasmuch as it makes a rigid structure which permits of mounting on the top of the door in such a fashion that the device cannot tip or move with respect to the door.

Having described my invention, l claim- 1. A latch retaining detent itor doors or the like comprising a body portion, a depending member at one end oit said body portion, a second dependingr member at the other end of the body portion, a transversely extending plate cooperating with the second mentioned depending member, said plate being provided with means by which it may be attached toa door or the like.

2. A/latch retaining detent for doors or the like, comprising a body portion, a downwardly extending member at one end of said body portion, a second downwardly extending meinbei' at the opposite end ot said body portion,a transversely extending plate associated with the second mentioned member, said body portion being hollow and having an opening, a spring pressed latch member within the said hollow body portion and adapted to project within the opening therein.

3. A latch retaining detent for doors or the like, comprising a body portion, spared downwardly projecting members, a transversely extending plate cooperating with one of said downwardly extending members, said body portion being hollow and having an openino` therein and a latch within said Vhollow boidy and adapted to extend through the opening therein.

4. A latch retaining detent for doors or the like comprising a body portion which is hollow and having an opening, a spring pressed latch member within the said hollow portion and adapted to extend through said opening, said body portion having spaced downwardly extending projecting portions,.

tised into the door, a plate associated with llO mentes one of the downwardly extending portions,

and lying Hush with the door surface, and

ttaching means for securing the plate to the oor.

6. The combination of a door of a detent member mounted at the upper portion of the door, said detent member comprising a body portion with downwardly extending parts at the rear portion of the detent memn ber and a downwardly extending portion at the front end of the detent membenthe said body portion and detents being inortsed into the door, whereby there is a portion or' the body of the door between the downwardly extending portions of the detent member, a plate associated with one of the downwardly extending portions of the detent member and extending along a surface oi' the door with means attaching the said plate to i the door.

7. The combination of a door of a detent member mounted at the upper portion of the said door, said detent comprising a body portion with spaced downwardly extending parts, the said body portion and downward ly extending parts being mortised into the door, the said body portion of the detent being hollow, a spring pressed latch member within said hollow portion and extending WILLIAM B. BULLES. 

